.background {
    position: fixed;
    overflow: auto;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 1000;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: rgba(0, 0, 0, .5);
    -webkit-overflow-scrolling: touch;
    outline: 0;
    .modelbox {
        position: relative;
        width: 800px;
        background-color: #fff;
        margin-top: 40px;
        padding: 60px 20px 30px 20px;
        border-radius: 6px;
        .title {
            position: absolute;
            display: flex;
            height: 50px;
            width: 100%;
            line-height: 50px;
            align-items: center;
            padding-left: 20px;
            top: 0;
            border-bottom: 1px solid #efefef;
            left: 0;
            .title-text {
                left: 0;
                color: #222222;
                font-weight: bold;
                font-size: 15px;
            }
        }
        .content {
            min-height: 100px;
            max-height: 500px;
            overflow-y: auto;
            padding: 0 20px 0 0;
        }
    }
}